7. You own at least 10 jerseys. And frat T-shirts. And other things that didn't originally belong to you.

8. So many feelings about chapter. Hating chapter. Hating having to move from your bed on a Sunday for chapter. Never forgetting how much you hated chapter even when you are 80.

9. You really rely on your photos. How else will you know everything that happened last night?

10. Never being able to go anywhere without running into someone you know. On campus. At your summer internship. In your office building at your first job. In your office building at your fourth job.

11. Realizing you need to buy workout clothes without letters on them. The other girls at spin class are looking at you funny (even though you know they're totes wearing their letters around their apartments).

12. Girls with bows illicit a visceral reaction from you: intense nostalgia or so much hate.

13. Getting ready to go out is a group effort.You don't know how to pick out an outfit without asking for the opinion of at least three other people.

14. No matter what day of the week, it's always almost the weekend. Monday is basically Friday. Tuesday is most definitely a Saturday.

15. You still refer to people as your little or your big, even in situations where everyone else has no idea what that means. What are you supposed to call her? Megan? Nope.

16. People who weren't in Greek life ask you if you knew someone who was also in your same sorority — at another school. Do you know everyone who grew up in Chicago in the 90s?

17. You've stalked more Potential New Members than dude crushes.

18. You find yourself looking at miscellaneous baubles (Christmas ornaments, bubble wrap, hard candies — anything) and thinking, "Oh, I could make a great costume out of that for a theme party someday!"

19. All the weddings. You spend most of your summer at weddings. You are in half of them.